Is SwiftUI as fast as UIKit in iOS 26?
7 hours ago
- #UIKit
- #SwiftUI
- #iOS Performance
- SwiftUI's performance compared to UIKit is a long-debated topic, especially regarding scroll performance.
- iOS 26 introduces significant improvements to SwiftUI's List updates and scroll performance, as highlighted in WWDC 2025.
- Real-world testing, like in Thomas Ricouard’s Ice Cubes app, shows noticeable improvements in scroll performance with iOS 26.
- A complex UI test was designed to push both SwiftUI and UIKit to their limits, featuring high-resolution images, animations, and variable-sized cells.
- The test aims to determine if SwiftUI has achieved performance parity with UIKit, a key factor for native iOS app development.